Mr. Santos is a Developmental Biologist, wants to study the growth and development of the three animals namely: reptiles, birds, and mammals. He found out that during their early stages of development, the embryos of reptiles, birds, and mammals look very similar. Which of the following is the BEST hypothesis for his data gathered? *   a. They have common ancestors. b. They live in the same type of environments. c. They have undergone parallel evolution.

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Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth.  Human evolution is an outcome of interaction among the following processes: